"Gran Paradiso Alpha 2 is an early developer milestone for the next generation of Mozilla's layout engine, Gecko 1.9. Gran Paradiso Alpha 2 is being made available for testing purposes only, and is intended for web application developers and our testing community. Current users of Mozilla Firefox should not use Gran Paradiso Alpha 2. There are no significant user interface changes in Gran Paradiso Alpha 2, however there are many core layout and rendering improvements."